In the UK a fast twist 243 makes far more sense for me than a 6 Creed as much as I like the Creed. It’s probably the most common hunting calibre here so ammo and brass is available everywhere. 6 Creed is not even close.
And with some places requiring copper bullets and some requiring factory ammo and some requiring both , being able to buy off the shelf is a win.
And with some places requiring copper bullets and some requiring factory ammo and some requiring both , being able to buy off the shelf is a win.